Sodium Citrate is with many excellent properties, which results in its wide applications in many fields. Sodium citrate is non-toxic, with good stability。 Therefore, it can be used in food industry. The demand of sodium citrate as food additive is the biggest, mainly used as condiment, buffer agent, emulsifying agent, swelling agent, stabilizing agent and preservative. Using together with citric acid, they can be good gelatinizing agent for jam, jelly,beverage and pastry. In medical industry, the usage of sodium citrate http://www.citric-acid-china.com/Products/Sodium-Citrate-Dihydrate.htm is also pretty wide. As a kind of preservative, sodium citrate is used to preserve syrup and other drugs. When injecting sodium citrate to human body, it can adjust the acid in the blood, body fluid and urine. Together with other reagent, sodium citrate can be used to extract ribonucleic acid. Since sodium citrate is easily soluble in water,it hs good ability to chelate with Ca2+、Mg2+ and other metal ions in water. Therefore, it is gradually replacing sodium tripolyphosphate to be used to produce non-phosphide detergents, especially liquid detergents. Adding some sodium citrate in the detergent can largely increase detergent’s dirt-removing power. The usage of sodium citrate is thus widened.